Power-driven saw



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1)); s I NM H, HOLMES. POWER DRIVEN SAW.

' APPLICATION FILED JUNE 7, 1919- RENEWED FEB- 21,192 2- 1,41 1,967.

H. HOLMES. POWER DRIVEN SAW. v APPLICATION mEo JUNE 1. 1919. RENEWEDFEB. 21. 1922. 1,41 1,967.

Patented Apr. 4, 1922.

bHEETSSHEET 2 INVENTOR man/ms H. HOLMES. POWER DRIVEN SAW. APPLICATIONFILED JUNE 7, H9. RENEWED EEB. 21, I922.

1,41 1,967. ,v E Patented 114, 1922.

3 SHEET SSHEET a;

INVENTOR A TTORNEYS WITNESSES UNITED H 5 OFFIQE.

HENRY HOLMES, OF BROOKLYN, NEW YORK, ASSIGNOR 0F TI-IBEE-FOURTHS TOJOSEPH F. MCPHEE, OF NEW YORK, N.

POWER-DRIVEN SAW.

Specification or Letters Patent.v

Patented Apr. 4, 1922.

Application filed June 7, 1919, Serial No. 302,380. Renewed February 21,1922. Serial No. 538,368.

To all whom may concern.

Be it known that l, HENRY l-lomins, a citizen of the United States, anda resident of the city of New York, borough of Brooklyn, in the countyoi Kings and State of New York, have invented a new and ImprovedPoweisDriven Saw, of which the following is a. full, clear, and exactdescription.

This invention relates to a treefelling saw, and ims to provide a deviceof this nature which shall not only be capable of telling a tree, butalso, after the tree is lying upon the ground, the device may beutilized to saw the trunk into sections.

it is a well-known fact that innumerable mechanical. saws have beendesigned, which are power driven, for the purpose of supplanting thelumber jack. it is known that these devices, almost without fail, haveproved impractical, for the reason that they, for the most part, includesome special form of blade which cannot be adaptedto the heavy usageunder which, almost exclusively, the cross-cut saw stands up.

Further, devices have been designed which utilize a saw somewhat similarto the crosscut saw, but these devices are incapable, without a greatdeal of adjustment, it at all, of sawing both horizontally, for thepurpose of felling a tree, and vertically, for cutting the some up intosections.

Saws have also been designed, none of which have stood up underpractical working conditions, by reason of the severe usage which isgiven them in lumber camps. A these latter saws usually incorporatedarather delicate and extremely flexible saw passing over pulleys, which.were very finely adjusted as to tension, etc, the truth of the aboveassertion will readily be appreciated.

Having these detects'in mind, I have designed'a power-driven saw whichwill be capable of eiliciently supplanting the labor of numerous pairsof lumber jacks, and in which a conventional, or often larger thanconventional, cross-cut saw blade is used.

- I further construct a saw and its associated parts capable ofbeingpower driven, which shall be extremely rugged and simple inconstruction, so that the same will stand up under the hardest kind ofusage and exposure to the elements and which shall be adaptable toeither horizontal or vertical sawing, thus; performing any operationwhich a pair of lumber jacks are capable of doing, only, as atorestated,performing these operations far faster and more efficiently than thelumber jacks, as well as working any length of time desired.

Heterence is had to the accompanying drawings in which like charactersdesignate similar parts in all the views, and in which- Flgure l is anelevational view with the saws in a position for cutting the trunk of atree into sections;

l 2 is an elevational view with one of the saws in position for fellinga tree;

3 illustrates the power-driving c011- nection utilized when the saw isin position illustrated in Fig. 2;

41 is an enlarged view of aconnection detail; l l

double bracket clamp adapted to retain the sawsupporting frame, which isused when the tree is being felled, in applied. position;

Fig. 6 illustrates the form of link bv means of which the saw issuspended and V 7 is an enlarged detail view of the connection,preferablyprovided between the ends of the cross-cut saw and itssupporting frame. In these views the reference numeral 1 indicates awheeled carriage, which is adapted to support a 'lranie, conrpnisingcrosspieces 2 pon which is arranged any suitable form of cradle adaptedto receive an engine, such as which may be provided with reductiongears, etc. Extending upwardly from the crosspicces are uprights, suchas 5, whose upper ends support a pair of horizontally-enter.ling rods,such as 6, which may be braced, as indicated by the reference numeral 7]l A shaft 8, driven by the reduction'gearing, is provided on both of itsends, with crank arms, such 9, WlllCllllll}? be counterbalanced, asindicated by the reference numeral 10, it it is so desired. Pivotallyconnected to the outer ends of each of the crank arms 9 is; a bar, suchas The bar 12 is preferably provided at its outer end with a pair ofplates 13 secured on opposite faces of the bar 12; and mounted betweenthe ends oi the plates 13 is a block, such as id, to which may hepivotally secured the inner end of a driving rod 15 by means of i. ig. 5is an enlarged detail view of the a pair of plates, such as 16,extenr'ling upon opposite sides or? the rod 15 and having their outerends connected to the block 14 by means of a pin passing therethrough.The plates 16 are formed with aligning openings, such as 17, throughwhich pass a pin adapted to connect thereto a rod 18 which may, when thesaw is in the position illustrated in Fig. 1, swingingly support the bar12 and the rod 15.

A cross-cut saw blade, such as 19, has'secured to its outer ends a frame20, which may be connected adjacent one of its ends to the outer end ofthe rod 15 by any suitable means, such as a conventional clampingarrangement 21. One of the ends of the cross-cut saw blade 19 ispreferably provided with a grooved frame-engaging member 22, which isformed with an integral, or fixedly secured, screw-threaded rod 23 onwhich is mounted a hand-actuated nut 24.

Clamped around two parts of the frame on opposite sides of the centralpoint of the same, there is positioned a bracket, such as 25, which hasextending between its end portime a guide 26. Mounted upon each of theguides 26 is a link 27 which is connected to one end of a helicalspring,such as 28, andwhich has its opposite end secured to links 29 which formthe lower corners of a ti'iangle, preferably constructed of chain,

the upper sides of which are connected toether by means a of a link,such as 30. i'iounted u on the outer ends of the horizon- 6 are pulleysover tally-exten ing rods 31 having their which pass ropes, or chains,

outer ends connected to the link 30, whereby when the inner ends of suchropes, or chains, 31 are moved, the saws will be caused, when the deviceis in the position illustrated in Fig. 1, to move in a vertical plane.It is to be understood that the ends of the ropes, or

chains, 31 may be controlled by means of a Windlass or any othersuitable arrangement, as desired.

1 It will now be seen mounted in the manner aforedescribed, the

same will be adaptable for use in cutting up the trunks of trees intosections; and it' s to be appreciated that while I have illustrated twocross-cut saw blades in applied position, I might readily utilize onlyone, or, on the other'hand, it would be permissible for me to duplicatethe framework described continuously so that an entire tree trunk mightbe cut up into sections in one opertions of the trunk will be severedfrom the ation. However, for all practical purposes,

it will be found that two cross-cut blades will meet with allrequirements, as two secbody thereof simultaneously, and a machine ofthis size will prove less cumbersome than would be the case if a greaternumber of blades were included in one machine.

It is to be appreciated that almost any suitable construction may beutilized by me to produce a reciprocation of the saw blades without inthe least departing from the that when the saw is ception that thereciprocation is usually faster and continuous. By virtue of thisconnection, it will be seen'that the blade is always held properlyvertically, that all the blades are reciprocated by mechanical means,that the teeth of the blades never come out of contact with the outbeing made, and that the weight of such blades and manner of stroke willbe such that the teeth of the blades will cut equally well through greenor dry wood. And by virtue of the aforementioned suspension method ofthe saws, the operation of the same will be more efficient than if theywere operated by hand.

Referring now more particularly to the arrangement utilized inconnection with the felling of trees where the blade works in ahorizontal plane, it will be seen that the wheeled carriage is formedwith a swivel bracket 32. To this swivel bracket there is secured a rod33 to which are clamped, by means of a double-bracket clamp 34. such asillustrated in Fig. 5, crosspieces 35 at right angles to the rod 33.These crosspieces have their outer ends provided, preferably, withspikes, as indicated by the reference numeral 36, which serve to firmlysecure the crosspieces 35, rod 33, and wheeled carriage l in fixedrelationship to the tree to be felled. The rear ends of the crosspiecescrosspieces 35, a pulley 38 around which the rope, or chain, 31 ispassed. A second'rope, orchain, is affixed. to the frame at a pointapproximately intermediate the brackets thereof, as indicated by thereference numeral 31, and both of such ropes, or chains, pass aroundpulleys, as indicated by the reference numeral 39, which pulleys aremounted on the rear end of a brace rod 40.

It is to be appreciated that the reciprocating'driving rod 15, as wellas the bar 12, might utilize an additional brace rod, and

for this reason I have provided a rod ll, whose inner end is pivotallysecured at a point intermediate the bar and driving rod by means of apin passing through the openings 17 formed through the plate 16, asindicated in Figs. 2 and 3. The opposite end 01 the rod 41 is pivotallysecured, as indicated by the reference numeral 42, to any suitable partof the carriage frame.

In operation it will now be seen that the crosscut saw blade 19 will bereciprocated by means of the bar 12 and its associated driving rod 15,but by virtue of the fact that the blade now working in a horizontalplane, instead of a Vertical plane, the saw will refuse to feed itselfthrough the cut made in the tree; but it will be noted that the saw maybe fed through the trunk of the tree by means of the ropes, or chains,31 and 31, or, if it is desired, be retracted from a cut at will.

It is further to be understood that I may vary the construction andarrangen'lent of parts in connection with the arrangement of the saw forfelling trees without in the least departing from the scope of myinvention.

Having thus described my invention, I desire to claim:

1. A power driven saw including a saw blade, a frame having its endssecured to such saw blade, a pair of springs having their lower endssecured to such frame, their upper ends being connected together, meansfor lowering and raising such upper ends, and means for reciprocatingsuch saw blade.

2. A power-driven machine including a saw blade, aframe' having its endssecured to such saw blade, means for reciprocating such trams, a pair ofsprings having their upper ends secured together. and guides se cured tosuch frame having the lower ends of such springs secured thereto,whereby the springs may be swung around such frame.

3. A. power-driven machine including a. saw blade, a frame having itsends secured to such saw blade, means for reciprocating such frame, apair of springs having their upper ends secured together, guides securedto such frame and having the lower ends of such springs secured thereto,whereby the springs may be swung around such frame, a flexible connectorrunning from the junction of the springs and inter-changeable meansarrangeable spaced from said springs, on the same side of the saw frameas the saw or-on the opposite side to which the connector runs tointer-changeably yielding-iv draw the saw forward by the springs or toyieldingly support the sawirame thereby.

HENRY HOLMES.

